如何在ASP.NET中使用System.Windows.Forms命名空间 [英] How to use System.Windows.Forms Namespace in ASP.NET

问题描述

我有一个用于生成网页快照的源代码.该代码包含WebBrowser类，该类位于名称空间System.Windows.Forms;
下
当我调试代码时，它在ASP.NET网页中将System.Windows.Forms显示为错误.
该怎么办?

这是我在网上找到的代码.

I have a source code for generating the snapshot of a webpage. The code is containing the WebBrowser class which is under the namespace System.Windows.Forms;

When i debug the code, it shows System.Windows.Forms as error in ASP.NET webpage.
What to do?

Here is the code what i found on web.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Windows.Forms;
using System.Threading;
using System.Drawing;
namespace WebSiteSnapshotThumbnails
{
    public class WebSiteSnapshot
    {
        #region Private Properties
        private String Url { get; set; }
        private Int32 BrowserWidth { get; set; }
        private Int32 BrowserHeight { get; set; }
        private Bitmap Bitmap { get; set; }
        #endregion

        #region Constructors
        
        public WebSiteSnapshot(string url, int browserWidth, int browserHeight)
        {
            this.Url = url;
            this.BrowserWidth = browserWidth;
            this.BrowserHeight = browserHeight;
        } 
        #endregion
        #region Public Methods
        
        public Bitmap GenerateWebSiteImage()
        {
            Thread m_thread = new Thread(new ThreadStart(_GenerateWebSiteImage));
            m_thread.SetApartmentState(ApartmentState.STA);
            m_thread.Start();
            m_thread.Join();
            return Bitmap;
        } 
        #endregion
        #region Private Methods
        private void _GenerateWebSiteImage()
        {
            WebBrowser m_WebBrowser = new WebBrowser();
            m_WebBrowser.ScrollBarsEnabled = false;
            m_WebBrowser.Navigate(Url);
            m_WebBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
            while (m_WebBrowser.ReadyState != WebBrowserReadyState.Complete)
                Application.DoEvents();
            m_WebBrowser.Dispose();
        }
        private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            WebBrowser m_WebBrowser = (WebBrowser)sender;
            m_WebBrowser.ClientSize = new Size(this.BrowserWidth, this.BrowserHeight);
            m_WebBrowser.ScrollBarsEnabled = false;
            Bitmap = new Bitmap(m_WebBrowser.Bounds.Width, m_WebBrowser.Bounds.Height);
            m_WebBrowser.BringToFront();
            m_WebBrowser.DrawToBitmap(Bitmap, m_WebBrowser.Bounds);
        } 
        #endregion
    }
}

推荐答案

首先，您必须添加对适当程序集的引用.

其次，对控件执行此操作是毫无意义的，因为您实际上无法在网页上使用Windows.Forms程序集中的任何控件.

First, you have to add a reference to the appropriate assembly.

Second, doing this for a control is fairly pointless because you can''t actually use any of the controls in the Windows.Forms assembly on a web page.

让它正常工作，您缺少有关Windows应用程序和Web应用程序的基础知识.我建议您先了解Web应用程序的工作原理.

Leave alone making it work, you are missing the basics about windows application and web application. I would rather suggest you to first understand how a web application works.

System.Windows中的任何内容都不能在Web应用程序中使用.
System.Windows.Forms是客户端控件.但是，Web应用程序在服务器端运行，并且在System.Web.UI中具有自己的UI元素.

Nothing in System.Windows is intended to be used in a Web application.
System.Windows.Forms are client controls. However, web applications run on the server side, and have their own UI elements in System.Web.UI.

这篇关于如何在ASP.NET中使用System.Windows.Forms命名空间的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！